Necessary and sufficient conditions for stability of fractional discrete-time linear state-space systems

• Autorzy: Busłowicz M. , Ruszewski A.
• Języki publikacji: EN

Abstrakty

EN

In the paper the problems of practical stability and asymptotic stability of fractional discrete-time linear systems are addressed. Necessary and sufficient conditions for practical stability and for asymptotic stability are established. The conditions are given in terms of eigenvalues of the state matrix of the system. In particular, it is shown that (similarly as in the case of fractional continuous-time linear systems) in the complex plane exists such a region, that location of all eigenvalues of the state matrix in this region is necessary and sufficient for asymptotic stability. The parametric description of boundary of this region is given. Moreover, it is shown that Schur stability of the state matrix (all eigenvalues have absolute values less than 1) is not necessary nor sufficient for asymptotic stability of the fractional discrete-time system. The considerations are illustrated by numerical examples.

Słowa kluczowe

EN

linear system; discrete-time; fractional; practical stability; asymptotic stability

• Wydawca: Polska Akademia Nauk, Wydział IV Nauk Technicznych
• Czasopismo: Bulletin of the Polish Academy of Sciences. Technical Sciences
• Rocznik: 2013
• Tom: Vol. 61, nr 4
• Strony: 779--786
• Opis fizyczny: Bibliogr. 32 poz., rys.

Twórcy

autor

Busłowicz M.

• Faculty of Electrical Engineering, Białystok University of Technology, 45D Wiejska St., 15-351 Białystok, Poland

autor

Ruszewski A.

• Faculty of Electrical Engineering, Białystok University of Technology, 45D Wiejska St., 15-351 Białystok, Poland

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